Belimo CRK24-B1, Technical Data Manual

Page: 9 / 20

www.belimo.eu
S4-CRK24-B1 • en • v1.2 • 06.2016 • subject to changes
9 / 20
Functions CRK24-B1
Introduction
The control functions of the CRK24-B1 define the behaviour of the controller output or influence
the current setpoint, respectively.
Operation can be automated and comfort and energy savings potential enhanced through the
utilisation of corresponding sensor mechanisms at the input side.
The corresponding functions are described in detail in the following.
Function overview CRK24-B1
Supply AC 24 V / 50/60 Hz
Application
– Room temperature controller in the comfort zone
– Internal temperature sensor (Type NTC, Power supply range 10 … 45°C)
– Setpoint (adjustment range 15 ... 36°C)
Operation
– Mode selection switch: AUTO – ECO – MAX
– Mode display LED: AUTO – ECO – MAX
– Setpoint adjustment rotary knob ±3 K
Inputs
– Pre-comfort
– Dew point limitation
– Energy hold off (EHO)
– External temperature sensor (Type NTC 5 kΩ, Power supply range 10 … 45°C)
– External setpoint shift 0 … 10 V
Output – 2 … 10 V System output: Belimo 6-way ball valve
Functions
– Control characteristics: P
– P-Band, switchable
– Output can be switched (modulating / On/Off)
– Room temperature monitoring (frost)
– Internal Function test with nominal voltage check
– Commissioning mode with simulation of output and sequence
– Diagnostics via integrated PC-Tool connection
Installation Surface mounting with flush-mounted or surface-mounted connection
Application documentation
Continually expanded, comprehensive documentation with specific applications is available for the
CRK24-B1 controller.